Defect localized entropy: renormalization group and holography

DOI10.1016/J.NUCLPHYSB.2023.116301arXiv2209.08835OpenAlexW4384699711MaRDI QIDQ6095229

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Publication date: 7 September 2023

Published in: (Search for Journal in Brave)

Abstract: We consider $p$-dimensional defects in $D$-dimensional conformal field theories (CFTs) and construct defect localized entropy by performing Casini-Huerta-Myers transformation for the system with defect. The defect localized entropy is a measure of entanglement between the degrees of freedom localized on the defect. We show that at the fixed point of defect renormalization group (RG) flow, defect localized entropy is equal to minus defect free energy for universal part. We construct defect $C$-functions from the defect localized entropy for surface defects and volume defects, and show that they monotonically decrease in both cases following the entropic method by Casini and Huerta. We also study the holographic dual of defect localized entropy and find that it is given by the minimal surface located at string or brane worldvolume embedded in the holographic bulk.

Full work available at URL: https://arxiv.org/abs/2209.08835

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